I like the three with a tap when sitting at a light, waiting for it to change.
I do not like to just leave the turn signal on when waiting at a long light. (Just no reason for it to be ON ON ON) so I like to tap the turn signal and it blinks, then wait... tap wait..etc.
Did the same thing with my last car. Just it did not automatically blink three times. i would just tip wait tip wait... until the light changed, then click it on normal.
I always leave a large gap from car in front. if some car wants into my lane, no problem. We are not usually going anywhere anyway very fast...
And three are fine for me to change lanes.. in fact i would say three blinks is perfect.